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Alright, I got it

For others that may experience this hung carrier:

There is also a capacitor in parallel with pin 5 for IC4. That electrolytic cap #C133 10uF at 16V was shorted out internally and went to ground so I replaced it and now there is no hung carrier. Radio Keys as it's supposed to.

I'm assuming that since C133 was shorted it faked IC4 into "thinking" that the mic was keyed. Other components in that circuit did not shut down the receive and hence the loud feed back squeal when the capacitor component failed.

[QUOTE="BBB, post: 370696, member: 23770"] Alright, I got it :thumbup1: For others that may experience this hung carrier: There is also a capacitor in parallel with pin 5 for IC4. That electrolytic cap #C133 10uF at 16V was shorted out internally and went to ground so I replaced it and now there is no hung carrier. Radio Keys as it's supposed to. I'm assuming that since C133 was shorted it faked IC4 into "thinking" that the mic was keyed. Other components in that circuit did not shut down the receive and hence the loud feed back squeal when the capacitor component failed. [/QUOTE]

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